package com.moduls.interfaceFunction.core;


import java.util.regex.Matcher;
import java.util.regex.Pattern;
/**
 *替换 html中图片路径 工具类
 */
public class HtmlUtils {
	 
		/**
		 * 替换指定标签的属性和值
		 * @param str 需要处理的字符串
		 * @param tag 标签名称
		 * @param tagAttrib 要替换的标签属性值
		 * @param startTag 新标签开始标记
		 * @param endTag  新标签结束标记
		 * @return
		 * @author huweijun
		 * @date 2016年7月13日 下午7:15:32
		 */
		public static String replaceHtmlTag(String str, String tag, String tagAttrib, String startTag, String endTag) {
			String regxpForTag = "<\\s*" + tag + "\\s+([^>]*)\\s*" ;
			String regxpForTagAttrib = tagAttrib + "=\\s*\"([^\"]+)\"" ;
			Pattern patternForTag = Pattern.compile (regxpForTag,Pattern. CASE_INSENSITIVE );
			Pattern patternForAttrib = Pattern.compile (regxpForTagAttrib,Pattern. CASE_INSENSITIVE );   
			Matcher matcherForTag = patternForTag.matcher(str);
			StringBuffer sb = new StringBuffer();
			boolean result = matcherForTag.find();
			while (result) {
				StringBuffer sbreplace = new StringBuffer( "<"+tag+" ");
				StringBuffer width = new StringBuffer( " width=\"100%\" ");
			    Matcher matcherForAttrib = patternForAttrib.matcher(matcherForTag.group(1));
	        	if (matcherForAttrib.find()) {
	        		String attributeStr = matcherForAttrib.group(1);
	        		sbreplace.append(width);
	        		matcherForAttrib.appendReplacement(sbreplace, startTag + attributeStr + endTag);
	        	}
	        	matcherForAttrib.appendTail(sbreplace);
	        	matcherForTag.appendReplacement(sb, sbreplace.toString());
	        	result = matcherForTag.find();
			}
			matcherForTag.appendTail(sb);         
			return sb.toString();
		}
	    public  String replace(String html,String url) {
	    	  StringBuffer content = new StringBuffer();
	    	  content.append(html);
//	    	  System.out.println("原始字符串为:"+content.toString());
	    	  String newStr = replaceHtmlTag(content.toString(), "img", "src", "src=\""+url+"/", "\"");
//	    	  System.out.println("替换后为:"+newStr);
	    	  return newStr;
	    }
	    /*public static void main(String[] args) {
	    	replace("<p><img src=\"/wx_file/2018/7/7/0cd6a227-95c3-40f0-9c79-9b73f3b23ddc.png\" alt=\"\" /><img src=\"/wx_file/2018/7/7/308fd581-d37f-48b5-9ca4-72f5f9a2451b.png\" alt=\"\" />\n</p>","http://121.42.231.1:8180/");
	    } */
}